Gear for bicycles.



No. 649,878. Patented Ma'y I5, |900.

' P. J. SCHABBACH.

GEAR FOR BIGYCLES.

(Application led Apr. 25, 1899.3

(No Model.)

PETER J. SOIIARBAOII, OF XVOODBURN, OREGON, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, OF TIIREE-FOURTIIS TO THOMAS SIMS, OF SALEM, OREGON.

GEAR FOR BICYCLES.

SPECIFICATION forming part of Letters Patent No. 649,878, dated May 15, 1900.

Application filed April 25, 1899. Serial No. 714,434. (No model.)

To all whom it 'mfc/7,.' concern: slip over the ball-bearing B, with its conc C Be it known that I, PETER J. SoHARBACi-i, and jam-nut n. This sliding gear G/ consists a citizen of the United States, residing at of the body-piece I and the gear-piece 2, and lVoodburn, in the county of Marion, State to prevent these pieces l and 2 from turning of Oregon, have invented a certain new and separately a key K is inserted between the 55 useful Improvement in Changeable Gears for lpieces l and 2 and kept in its place by tho Ohainless Bicycles, of which the following is jam-nut 3, screwed unto the body-piece l. a specification, reference being had to the ac- The body-piece I has at the end toward the companying drawings. crankshaft O a ball-bearing B2, to the casing 1o This invention relates to improvements in tof which two eyeboltsEare secured,whereby 6o changeable gears on chanless bicycles in the sliding gear G can be adjusted by sliding which the bevel-gearing on the rear wheel of back and forward on gear-shaft R. The clevis a chainless bicycle as now in use is replaced E is fastened to these eyebolts E and termiby an adjustable changeable gear, whereby nates into a rod E2, passing through a spiral I5 the climbing of steeper grades is facilitated. spring S, located between a lug S', projecting 65 I attain these objects by the mechanism illusfrom the tube T, and a washer or equivalent trated in the accompanying drawings, in device secured to the said rod E2. This rod which- E2 is to be operated by the rider when a Figure I is a side View of the rear wheel of change in the gear is desired, and if released 2o a chainless bicycle, showing the changeable by the riderthe sliding gear Gl willjump back 7o n gear in place. Fig. 2 is a top View of the through themeans ofpressureofspringSinto same. Fig. 3 is a side view ofthe changeable its original position. When a change in the gear on a larger scale. Fig. 4 is a horizontal gearing is desired, the sliding gear G' is slid cross-section through the same at line a; fg. along the gear-shaft R until the cog-gearing Similar letters and numerals referto similar I-I connects itself with the suitable gear H2 0r 75 parts throughout the several Views. Hs on the face of the gear-disk G. This gear- The power is applied to the gear-shaft R, disk G, being held in place by ball-bearing B3, housed in tube F, by the ordinary bevel-gear is distanced just far enough from the sliding' on pedal crank-shaft C and is transferred by gear G' to allow the respective gearings to ensliding gear GQ sliding on gear-shaft R, to the ter each other easily. For this purpose the 8o gear-disk G, which is fastened to the axle A face of gear-disk G is dished in or convexed, of the rear wheel W. Tube T is formed at so that said face is parallel to the center line its end into a fork F', through the center of geanshaft R. The gear-disk Goan be enof which the gear-shaft R passes and relarged and provided with as many cog-gearvolves in the ball-bearings B and B. The ings as may be suitable. 85 ends ff' of the fork F are held in place by I am aware that prior to my invention clamp U, which again is slid onto the outer changeable gearing has been in use. I theren end of the axle A of Wheel W by its notchedfore do not claim such a combination broadly; out part U' and adjustably secured to said but 4o axle by nuts u2 and us. In the fork F and lVhat I do claim as my invention, and de- 9o on the gear-shaft R slides the round sliding sire to secure by Letters Patent, is gear G8,whichhasacog-gearingringH around l. The combination in a changeable gear its outer end and connects therewith with the for cycles, of a gear-disk having a plurality different cog-gears H, H2, and H2, with which of gears thereon, a gear-shaft, a bearing for gear-disk Gis provided. The gear-disk G is said shaft, a sliding gear arranged to mesh 95 secured to axle A of the rear Wheel W by the with the gears on said disk, and having a hol.- ball-bearing B2, with its cone. The gearlow end, and means for moving said gear on clutch GS, which is adjustable, slides on the its shaft, the hollow end of the gear passing gear-shaft R in the fork F. The sliding gear over said bearing as it nears the end of its 5o G is hollowed out at its end at g, so as to movement, substantially as described. roo

2. The combination in a changeable gear for cycles and with the rear Wheel thereof having a gear-disk provided with a plurality of gears thereon, of a clamp supported by the rear axle, a bearing supported by said clamp, a tube extending rearwardly from the crankhanger, a gear-shaft rotating in said tube, and on the aforesaid bearing, a sliding gear arranged to mesh with any of the gears on said gear-disk and having its rear end made hollow, and means for moving said gear on its shaft, the said hollow end of the gear passing over the `said bearing when it is moved rearwardly on its shaft, substantially as described.

3. The combination in a changeable gear for cycles and with the rear wheel thereof having a gear-disk provided With a plurality of gears thereon, of a clamp U secured tothe rear axle and having outwardly-projecting ends f, f, forked tubing F having its forked members connected with the projecting ends of said clamp, a tube T connecting the other end of said forked tubing with the crankhanger, a bearing supported on said clamp, and a bearing supported at the juncture of said forked tubing and the tube T, avgearshaft R rotating in said tube T and supported on said bearings, a gear sliding on said shaft R between said bearings and arranged to mesh with any of the plurality of gears on the said gear-disk, and means for sliding the gear-disk on its shaft comprising a casing 4 having ball-bearings 2 between it and the said gear, a clevis E/ secured to said ing the front end of said forked-out tubing i with the crank-han ger, and ball-bearings connected with said clamp U within the forkedout tubing F, a shaft R rotating within said tube T and having its rear end running on said ball-bearings, a gear sliding on said shaft R, arranged to mesh with any of the gears on said gear-disk G, and having its rear end hollow to allow it to slide over the aforesaid ball-bearing, the other end of said sliding gear having a ball-bearing connection with the casing 4, a clevis E connected with said casing, a rod E2 connected with said clevis and a spring S operating on said rod E2 to move the gear-clutch in one direction, substantially as and for the purpose specified.

In testimony whereof I aiix my signature, in the presence of two Witnesses, this 15th day of April, 1899.

PETER J. SCHARBACH.

Vitnesses:

A. OHLHOEF, FRED TOPKEN. 

